Machine for forming concrete blocks



J. M. SCHENK, DECD.

E. M. SCHENK, ADMINISTRATRIX- MACHINE FOR FORMING CONCRETE BLOCKS.

APPLICATION FILED APR.22. 1920.

1,380,598, Patented June 7, 1921.

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Inventor;

Estate of John J. Sake/747%,

flecaase a z J. M. SCHENK, DECD.

E. M. SCHENK, ADMINISTRATRIX. MACHINE FOR FORMING CONCRETE BLOCKS.

APPLICATION FILED APR.Z2, I920- Patented June 7, 1921.

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Fig. 3.

mmiimi frzverztOK the-reciprocable mold showing the rotary which Figure 1 is a side machine for entree stares m me caries.

JOHN M. sonnnx, nncnasnn, LATE or WATERLOO, IGWA, BY ELLA M. scnn'nx,

AD1VIINISTBATBIX, ASSIGNOR T0 ELLA M.

SCHENK, OF WATERLOO, ION'A.v

I MACHINE non roaivrrne oononn'rn nnooxs.

"that said JOHN M. SOHENK invented .certain new and useful Improvements in Machines for Forming Concrete Blocks, of which the following is 'a specification,

This invention relates to improvements in machines for forming concrete blocks, and the improvements herein shown and described relate to mechanism for producing blocks having elongated troughs orhollows therein;

' The improvements have been accomplished by the means as hereinafter described, and as shown in the accompanying drawings, in elevation of the said forming concrete blocks, and Fig.2 is a top plan view thereof. Fig. 3 is a vertical cross section thereof, taken on the broken line 33 of said Fig. 1,-and looking in the. direction indicated by the arrow. Fig. 4 is a vertical. longitudinal section of former-head completing the formation of a troughed block therein. Fig. 5 is a vertical cross section of'the mold and its supporting means, with the rotary former-head in operative position'therein, and Fig. 6 is a perspective detail view of the interiorly bossed end-wall of the mold.

Similar numerals of reference denote corresponding parts throughout the several views.

The supporting structure for the moving parts ofthe machine comprises pairs of transversely-spaced standards 14 and 15, to whose top parts are secured fixedly the spaced longitudinal beams 16, which are,

- top closed along the lower parts of their inner or opposed faces, provided with longitudinallygrooved slideways 22.

The numeral 2& denotes an elongated open bottom mold for concrete blocks, whose end-walls .29 may or may not have Speeificationof Letters late'nt.

Application filed April 22,1920.

citizen of the United.

' of the mold.

. at 33 in said Fig. 2,

Serial no. 375,829.

inwardly-directed bosses or tions 30 to form recesses in the ends of blocks. f

Longitudinal ribs 23 are mounted along the lower parts of the outer longitudinal walls of the mold, and fit within the slideway grooves 22 slidably, thus permitting the mold to be moved or reclprocated longitudinally of the machine by means of a looped handle 28 fixed on one end of the mold, manually. Y I

The numeral 27 denotes a cover-plate for said mold, whose outer edges are conterminous therewith,.and which may be removably secured uponthe mold by means of the spring-clips 25 thereon which take releasably overlugs26on the outer end walls 'The cover 27 has a'longitudinal opening, medially located, as shown whereby ledged parts extend inwardly over the hollow of the mold fora distance all around. 1

A number of horizontally alined orifices 17 are made in both of the beams 16, to receive a bolt or pin 18 across the interspace of. the beams, to thereby adjustably limit the scope of movement rearwardly of said mold along its slideways." r

Anterior to these orifices standards 19 are fixedly erected on the beams 16, across each other, and are provided with a large number. of transverselyalined staggered orifices 20,-to receive a bolt'or pin 21, adjustably at difierentheights on the standards, for a purpose to be disclosed.

The upper ends-of the standards 14pmject above the beams 16 and contain orificed bearings for the rotatable shaft 8 on one end of whichis fixed a belt wheel '12 driven by a belt 13. On the opposite end of said shaft is fixed a belt wheel 11. The numeral 6 denotes a transversely spaced pair ofarms whose forward'or free ends are fixedly connected by means of a handle-bar 7 The rear ends of said arms 6 are pivotally mounted on the shaft 8 permitting the-arms to be swung up or down by manual use of the handle-bar 7.- Bracketed bearings 5 are fixed medially on the outer sides of'both arms 6 to depend therefrom and in said from Patented June a, rear.

sloping proj ecslideways 22, its cover beams 16, the

- trough 32 within the bearings is mounted a rotatable shaft 4 carrying on one end a belt-wheel 9, a belt 10 connecting said belt-wheels 9 and 11. Be-

tween said arms 6, a rotary former-head 1 is fixed on the shaft 4 to rotate therewith. This former-head is in the shape of a thickened disk whose thickness is but slightly less than the transverse width of the opening 33 in the mold cover 27. A desired number of small recesses 3, equidistantly spaced, are provided in both faces of the formerhead 1 and extending through the circumferential angles thereof, thus providing a number of angles or troweling cheeks 2 When the mold 24 has been mounted slidably onthe beams 16, its cover 27 being secured thereon, and a quantity of fresh concrete deposited within the mold, the formerhead 1 may be placed in rotation after the transverse bolt 21 has been placed at the proper height across the standards 19, and the arms 6 then swung downwardly to cause the former-head to enter the hollow of'the mold through its cover opening 83. The bolt 18 having been previously adjustably located in certain of the orifices 17 of the mold 24 may be pushed back and forth along the slideway manually, while the former head is in rotation.

As shown in said Figs. 1 and 5, the re ciprocation of the mold while the former head is rotating therein, permits the latter to rub or trowel the concrete to pack it "against the bottom, sides and ends of the mold, and against the under inwardly projecting face of the ledge parts of the cover 27, thus forming an elongated closed end fresh concrete block thus formed. The recesses 3 with their angles or checks 2, aid in the packing and troweling process, by pushing and troweling the fresh material, so that all parts of the block 31 are homogeneously and e ually compacted-to produce a structure 0 even and maximum strength;

The block having been thus formed, the bolt 21 may be re-located in higher orifices 20 to support the arms 6 with the former head 1 clearing the mold. The mold may then be withdrawn lengthwise from the plate 27 removed, the mold inverted and the block 31 deposited on some surface to harden.

Having described this invention, what .is claimed is: I

1. In a machine for forming concrete blocks, an open mold mounted for reciprocation, and a rotary former-head having a plurality of troweling cheeks movable into and out of said mold.

2.- In a machine for forming concrete blocks, an open mold mounted for reciprocation, and a rotary former-head having troweling cheeks mounted to swing to and from said mold.

' blocks, a supporting former-head mounted of insertion thereinto.

In a machine for forming concrete blocks, relatively fixed supporting means, an open moldmounted for slidable reciprocation upon said supporting-means, and a rotary troweling former-head movably supported on said supporting-means, and oper- V ableto be moved into and out of said mold to rotatably trowel a longitudinal trough in its contents.

6. In a machine for forming concrete blocks, a supporting structure having spaced slideways, an open mold having parts seated slidably in said slideways, an arm swingingly mounted on said structure, and'a rotary former-head mounted on said arm to be swung into and out of said mold- In a machine for forming concrete blocks, a supporting structure, an open elongated mold slidably removably. mounted thereon, a rotary former-head mounted on said structure to be swung into and out of said mold, and means for adj-ustably restricting the scope of movement of said mold in one direction. V

8. In a machine for forming concrete structure, an open el0ngated mold slidably removably .mounted thereon, a rotary circumferentially indented on said structure to be moved into and out of said mold adjustably, and means for adjustably restricting the scope of movement of said mold in one direction.

9. In a machine for forming concrete blocks, a supporting structurehaving slideways, an open mold slidable along sald slideways, said mold having an open cover removably mounted thereon, and a rotary former-head mounted to move-into and out of the mold through the opening in its cover. i

10. In a machine for forming concrete blocks, a reciprocable open elongated mold, a rotary former-head swingingly mounted to be swung into and out of said mold while the mold is being moved in oneodi'rection longitudinally about the former-head, the former-head a reciprocable open top. elongated being of less width than the interior width of the mold and having a plumold, removable inwardly extending spaced ing the scope of movement of said formerstrips mounted removably on the top edges head into said mold.

of the mold, a rotary former-head movable Signed at Waterloo, Iowa, this 29th day 10 through the interspace of the ledges into of March, 1920.

the mold, means for variably limiting the ELLA M. SCHE-NK, scope of movement of the mold in one direc- Admtm'stmtm'w of the estate of J ob/n M. tion, and other means for variably restrict- Schenk, deceased. 

